Malicious PDF — malware analysis report

Static analysis result for SHA-256 a281f993b815ad7d…

MALICIOUS

PDF

84.1 KB Created: 2021-03-08 18:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01cc6b2ce0392a0481e1b6c3bed829ff SHA-1: e6db64e5e577bcec385780056cf79174f8fe4c3d SHA-256: a281f993b815ad7db92a200d4657ea63f8d807abc184359128cabb14c399fbcd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI that masquerades as a search result for a common technical query, likely to trick users into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI and the nature of the detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/aws?utm_term=cisco+linksys+e2500+reset+password
    • https://cdn.sqhk.co/rorefevobo/hjgyJA6/shriram_general_insurance_online_policy.pdf
    • https://cdn.sqhk.co/jabosuve/v1Fhbgc/73405757979.pdf
    • http://subejewumo.scienceontheweb.net/20865176621.pdf
    • http://roxedizusugu.mywebcommunity.org/woxewebamusoraxif.pdf
    • https://cdn.sqhk.co/terasovo/UegiuRH/jogesiwuferitazopirefili.pdf
    • https://cdn.sqhk.co/dumudegurit/dMhbjj7/59867369867.pdf
    • http://depusapo.mypressonline.com/patek.pdf
    • https://cdn.sqhk.co/pasededi/gTCIR7x/hill_street_blues_piano_sheet_music.pdf
    • http://jekefidaz.mygamesonline.org/what_are_the_methods_and_techniques_of_teaching.pdf
    • http://wupevijijoze.mygamesonline.org/52544599468.pdf
    • https://cdn.sqhk.co/lulufebexefe/SAggkjf/10568705075.pdf
    • http://nutetuxiv.mygamesonline.org/63244204091.pdf
    • https://cdn.sqhk.co/zukasedu/9hNibsy/tewilenenizupovegevopaxep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lemefofutomapox/jelinalixofijidoxu.pdf
    • http://girofili.myartsonline.com/what_is_flock_mean.pdf
    • http://fukogalijikufoz.epizy.com/are_any_microwaves_made_in_usa.pdf
    • http://fepusum.onlinewebshop.net/is_it_better_to_breathe_out_of_nose_or_mouth.pdf
    • http://kajurilin.rf.gd/bit_web_server_apk_cracked.pdf
    • https://s3.amazonaws.com/vovuzize/16232639937.pdf
    • http://jijeledinevo.rf.gd/99200029989.pdf
    • http://fuvuvadut.onlinewebshop.net/is_the_story_of_catch_me_if_you_can_true.pdf
    • https://s3.amazonaws.com/sesafefanulokam/how_to_set_water_softener_regeneration_time.pdf
    • http://muwalolerede.epizy.com/btc_result_marksheet.pdf
    • https://s3.amazonaws.com/laginekux/51785772086.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bf7.bin
c1fcb2f99b9d75a514aa5da4df31befff76e6e7f9337f4793ed7fe316b2e8d56
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF7 5628 bytes
font_01_sfnt_off00011f4d.bin
0cf7a78225efea48c709a351d9d14a1f665061fc59be0952526b34b0959c7b6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4D 10564 bytes